Mat



FIG. 1 is a perspective view of the mat;

FIG. 2 is a top view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a cross-sectional view thereof, taken from plane line 4-4 in FIG. 1;

FIG. 5 is a cross-sectional view thereof, taken from plane line 5-5 in FIG. 1; and,

FIG. 6 is a front view thereof. 

CLAIM The ornamental design for a mat, substantially as shown and described. 